Burnt Clay Bricks Research Articles

Manufacturing of Clay Bricks Using Hybrid Waste Marble Powder and Sugarcane Bagasse Ash: A Sustainable Building Unit

In masonry construction, the most commonly used building unit all over the world is the burnt clay brick. Adding waste materials in certain percentages to these bricks helps in eliminating the environmental burden occurring in the form of excessive waste accumulation on open land sites, leading to sustainable and economical construction. This research program aimed to examine the feasibility of using waste marble powder (WMP) and sugarcane bagasse ash (SBA) in the manufacturing of clay bricks. WMP was collected from local marble cutting workshops, whereas SBA was prepared by burning the waste sugarcane obtained from various sugar mills in the local area. Brick specimens incorporating 5%, 10%, 15%, and 20% of hybrid WMP and SBA were prepared at a local brick kiln. Burnt clay bricks were transported to the laboratory, and their mechanical and durability properties were evaluated. A reduction in weight per unit area of brick specimens incorporating waste materials was observed, allowing them to be easily handled and transported. Decreased compressive strength was due to the addition of waste materials in comparison with conventional clay bricks. However, waste percentages up to 15% satisfied the criteria for the minimum compressive strength as per the Building Code of Pakistan (BCP). All tested samples showed flexural strength greater than 0.65 MPa. Tested bricks incorporating 10% and 20% of waste materials had water absorption values of 18% and 21%, respectively, which are higher than that of conventional clay bricks. Moreover, bricks incorporating waste materials exhibited a higher initial rate of absorption than conventional clay brick; therefore, such bricks need to be wet well before use in masonry construction. Brick specimens showed less than 1% weight loss, and bricks exhibited no signs of distress and cracking after 50 freeze-thaw cycles. A decrease in compressive strength was observed due to sulphate exposure. However, specimens with 10% waste materials still satisfied the minimum compressive strength requirement of BCP. Based on this study, it can be concluded that bricks with up to 10% hybrid waste materials (WMP and SBA) will assist in the environmental issues of these wastes, leading to more sustainable and economical masonry construction.

Characterization of mechanical behavior of different types of masonry with a detailed investigation of full-field strain using digital image correlation

This article presents an experimental study on the mechanical characterization of three different types of masonry: burnt clay bricks, fly ash bricks, and autoclaved aerated concrete (AAC) blocks, with a detailed focus on strain distribution and failure mechanism. The specimens were subjected to direct and diagonal compression loading, and the stress–strain curves and failure modes were studied. Digital image correlation (DIC) was used to obtain full-field strain data, allowing for detailed analysis of failure mechanisms, tracking of crack propagation, and examination of other intricate details. The DIC analysis showed that in burnt clay brick and fly ash brick masonry, failure under compression was initiated by the tensile splitting of the brick, while in AAC block masonry, it was initiated by the tensile splitting of the mortar. Additionally, the study identified that the failure modes under diagonal compression were different for each type of masonry, with bed joint sliding being the dominant failure mode in fly ash brick and AAC block masonry. In contrast, the failure mode in burnt clay brick masonry was due to vertical splitting along the loaded diagonal. In the diagonal compression test, the shear strain along both diagonals was negligible, and principal strain directions were observed to be aligned along the two diagonals.

Compressive stress–strain behaviour of masonry prisms made of low elastic modulus burnt clay bricks

Masonry, being a quasi-brittle material, displays mechanical properties and manifests non-linear behaviour, which is influenced by the specific attributes of its constituent units and mortar. The compressive stress–strain behaviour of masonry is a vital factor in the realistic analysis of masonry structures when subjected to ground deformations arising from construction activities such as excavation, underground tunnel construction, utility installations, and for evaluating their seismic vulnerability. In India, the commonly used masonry unit is burnt clay bricks, which are highly localized due to changes in the constituent material and manufacturing process. This leads to variations in the strength and stiffness of brick units from region to region. An experimental investigation was conducted using twenty-four brick specimens, seventy-two mortar cube specimens and forty-eight four-unit single-wythe masonry prism specimens, subjected to displacement-controlled uniaxial compressive load. The specimen displacements of brick units and masonry prisms were obtained using Digital Image Correlation analysis. The stiffness of the brick units was significantly lower than those reported in studies conducted in India or elsewhere. Statistical analysis has been performed, and relations between the respective compressive strength and elastic modulus of brick units, mortar and masonry prism specimens have been obtained. An equation has been proposed to estimate masonry prisms’ elastic modulus from its components. An analytical model has been proposed for predicting the compressive stress–strain curve of masonry prisms, incorporating the elastic modulus of masonry prisms, which can be predicted using the expression proposed in this study. This is a fundamental improvement over the expressions available in the literature.

Study of Aerated Lightweight Mortar Using Aluminium Powder and Local Materials

Conventional burnt clay bricks are still mostly used as building materials for both load-bearing and non-load-bearing walls in Nepal. The use of brick walls not only increases the dead loads on the structures but also becomes the main cause of casualties during the earthquake. This paper describes the development of an alternative lightweight mortar using aluminium powder to replace the bricks. The base mixture of the mortar was experimentally determined and the properties were studied with the ranging content of the aluminium powder by weight of cement. The result showed a decrease in the density and compressive strength but an increase in the water absorption while increasing aluminium powder content. The density was possible to decrease by about 52% with the use of 0.9% aluminium powder. The decrease was very less while increasing the aluminium content from 0.6% to 0.9%. The 28-day compressive strength was decreased by 59% and 63% at aluminium content of 0.6% and 0.9% respectively. With the achievement of a density of less than 1000 kg/m3 and a 28-day compressive strength of more than 7.5 MPa, the optimum content of the aluminium powder was 0.6%. The implementation of this result implies producing lightweight bricks, blocks and panels replacing the burnt clay bricks. It not only lightens the building structures and avoids the casualties during big earthquakes but also saves the environment by minimizing the carbon-di-oxide, avoids the degrading of agricultural soils and even minimizes the risk of climate change.

Technological Appraisal of Prefabricated Glass Fibre Reinforced Gypsum (GFRG) Panels in Building Construction System

Housing is a fundamental human necessity and an integral part of the built environment. Traditional building materials utilised in the housing sector, like steel, cement and burnt clay bricks, are becoming more and more necessary every year. The decrease of the use of these energy-intensive construction materials and the speedy supply of housing units at reasonable rates are the two key challenges facing the mass housing business today. Glass Fibre Reinforced Gypsum (GFRG), a new building material, is used mostly in houses. Building panels called Rapidwall are another name for it. Gypsum plaster that has been changed and strengthened with chopped glass fibres is used to create glass fibre reinforced gypsum panels, or GFRGs. This panel can be used to build walls, floors, and roof slabs because it has voids that can be filled with concrete and reinforced with steel bars for further strength and ductility. It is a cost-effective and environmentally beneficial alternative to common materials like cement blocks, concrete, and bricks. Prefabricated Glass Fibre Reinforced Gypsum (GFRG) Panels are a cost-effective and resource-efficient way to build low-rise homes in poor nations. The case of Prefabricated Glass Fibre Reinforced Gypsum (GFRG) Panels is examined in this research, along with their engineering viability and qualities as a building material. The study finds that GFRG panels are a practical substitute for traditional bricks that have more intangible advantages.

Experimental study on hollow interlocking FaL-G bricks

Thermal power industries produce a large amount of fly ash, a waste product. Lime is a material used in many companies in chemical processes and deposited as waste. A by-product of the fertiliser business is phosphogypsum. In our country the proper disposal of the industrial waste is a big issue. To find remedial measure for disposal of the industrial waste, in this study an attempt is made to check whether it is possible to create hollow interlocking bricks out of all these waste materials. The present study reveals that all these materials can be effectively used to produce an alternative to conventional burnt clay bricks. If such bricks are used in construction activities, it will help to check the land pollution which is there due to use of good agricultural clay for the manufacturing of bricks as well as avoid the air pollution due to burning of bricks. The bricks manufactured using fly ash, gypsum and lime (Fal-G) require air drying no burning is required hence avoid air pollution as well.

Sustainable Eco-Friendly Building Material – A Review Towards Compressed Stabilized Earth Blocks and Fire Burnt Clay Bricks

The aim of the current research article is to provide a comprehensive review and discuss and conclude on two types of earth blocks i.e., stabilized compressed earth blocks and fire-burnt clay bricks. A direct correlation exists between the number of greenhouse gases emitted and the amount of coal used to manufacture the fire-burnt clay bricks. To address this issue, new construction materials have been developed. Compressed Stabilized Earth Blocks (CSEBs) is an enhanced earth-based masonry material as it is not burnt. CSEBs are manufactured by compressing the soil under pressure. Coal and other burning fuels are not used at any point in the manufacturing process of CSEBs. Environment-friendly and energy-efficient construction materials that encourage the sustainable development have grown significantly in the recent years, as the public have become highly conscious. Since the building materials are produced in local communities, the local resources are efficiently used, transportation costs get reduced and high-quality housing is made available to a large spectrum of people. Less time-consuming construction techniques and low labour demand results in increased strength, insulation and thermal characteristics, lower carbon emissions and embodied energy during the life cycle of the materials and exceptionally low levels of trash that can be easily disposed of. When locally-produced materials are used for building purposes, it creates jobs and is more eco-friendly, during the times of crisis. CSEB and conventional bricks require different amounts of energy and release significantly different amounts of carbon dioxide throughout the production process. A review of the construction process that utilizes clay bricks and CSEBs has been conducted using the data and reports from numerous research papers and organizations. According to this review, the Compressed Stabilized Earth Blocks outperform the fire-burnt clay bricks in terms of advantages. When it comes to creating new environment-friendly construction materials, the CSEBs remain a viable option.

Air-conditioning cost savings, CO2 emission benefits and return on investment by using waste in porotherm bricks in hot-arid and warm-temperate climates

Building energy consumption has dramatically increased globally during the last few decades. This energy is primarily utilized to keep air-conditioned buildings at a comfortable temperature. As the worldwide demand for energy increases, net-zero or green buildings will undoubtedly become more and more crucial to address challenges related to climate change. It is well-known in this regard that the use of thermal insulation materials inside the building can contribute with temperature management and thermal comfort by preventing heat transmission. The present study examines the thermo-economic aspects of porotherm blocks filled with discarded insulations. Six different types of insulation were therefore investigated, and each was inserted into the porotherm brick cavities, including plastic powder, tire powder, cloth powder, leather powder, rockwool, and coconut pith. The effects of these newly developed brick configurations on air-conditioning costs, carbon dioxide emissions and payback time are compared to those of conventional porotherm blocks and burnt clay bricks. Thermo-physical properties of the aforementioned insulating materials, as well as porotherm brick and burnt clay brick, were established by experimental analysis. The thermo-economic analysis was carried out based on the number of degree-hours of heating and cooling to determine the building's annual energy usage. The thermo-economic performance of insulation-stuffed porotherm bricks was evaluated in two locations in India with distinct climatic characteristics: (28.57° N 75.12° E) New Delhi (warm-temperate climate) and (28.00° N 73.30° E) Bikaner (hot-arid climate). The rockwool porotherm brick wall demonstrated the best results in terms of lower unsteady transmittance, greater air conditioning cost-savings, appropriate payback spans, and improved yearly carbon mitigation values of 0.29 W/m2K, 0.83 $/m2, 0.95 years, and 15.65 kg/kWh, respectively, in hot-dry climates.

Conventional Burnt Clay Bricks Vs AAC Blocks in Construction Projects: A Comparative Study

Abstract: AAC blocks and red clay bricks are two of the more majorly used blocks used in buildings all over the world. Both the block categories have a definite set of pros and cons. A comparative analysis of them is essential to understand and determine which of the two is a superior product, both technically and economically. Experimentation was done on samples of both blocks. Although, some defective set of samples didn’t provide the expected results, it did provide an insight in the technicalities associated with the blocks. It further allowed a comparison between the observed data and the expected data, highlighting how defects within the blocks could affect the properties. Further, some tests were analysed by studying available reports, thesis, articles prepared by various research workers working on the behaviour and properties of AAC blocks and red clay bricks. The overall study proved that AAC blocks, though weaker in compressive strength are much superior in most other properties than the red clay bricks

Multi-criteria decision analysis for optimum selection of different construction bricks

Theis research aims to analyse a solar dryer based geopolymer bricks and compare it with other types of bricks available in the market. In recent days, some research studies are carried out related to construction bricks, apart from solar dried geopolymer bricks, which are sustainable construction materials. In this study, we analysed and compared the qualities of burnt clay bricks, concrete bricks, hollow blocks, bio-bricks, and geopolymer bricks. Multi-criteria analysis is utilised with the results obtained through the compressive test, water absorption test, thermal conductivity test, Scanning Electron Microscope (SEM) analysis, cost comparison, and VIKOR's matrix test data. To evaluate the experimental and analytical data and to select the best brick for the decision-makers, the ranking system developed by VlseKriterijumska Optimizacija I Kompromisno Resenje (VIKOR) is used in this investigation. This study also compares the test results of brick used in general construction with geopolymer solar-dried brick, which performs better than clay bricks, cement bricks, Bio-bricks, and Eco-friendly bricks. Results concluded that the eco-friendly cement bricks have good strength, shape and texture and 16% water absorption. Cement bricks are the most ecologically friendly and found as a sustainable product since they are available at the lowest embodied energy of 1.49 MJ/kg and emit the lowest embodied greenhouse gas of 0.162 kg of CO2 when compared to conventional bricks.

Utilization of ground granulated blast-furnace slag powder in brick industry: A new generation building material

This study presents research on the use of geopolymer bricks in construction, which are made using materials such as fly ash, GGBS, sand, cement, and alkali activators. The study focuses on the use of GGBS as a fractional replacement for cement in the bricks and investigates the effects of different molarities and silicate-to-hydroxide (S/H) ratios on the properties of the bricks. The results show that the bricks made with a molarity of 10 M and S/H ratio of 2.5 had the highest compressive strength of 27.22 MPa. The study suggests that using geopolymer bricks is a more environmentally friendly and cost-effective option than traditional fly ash or burnt clay bricks in the construction industry.

Studies on shear strength and stiffness of brick masonry walls

Load bearing walls of Masonry structure are subjected to both gravity loads and horizontal loads during earthquake. The failure in shear is normally observed in masonry buildings under lateral in-plane loads. The state of knowledge relating to the strength and deformation characteristics of masonry to in-plane lateral loads is less than that in compression. The shear strength and stiffness of walls are important parameters in the design of masonry structures against lateral loads. Hence detailed investigation on the behavior of masonry when subjected to lateral in-plane forces is necessary. The shear strength and stiffness of masonry walls built with burnt clay bricks in 1:6 cement mortar and thin jointed cement granite fines paste have been evaluated from racking load test. Walls with different configurations such as with flanges, with reinforcement and both the half brick and one brick thick walls without reinforcement were built and tested. Load deflection graphs were plotted for all the walls and the shear strength, stiffness,energy for failure were determined. The results indicated that the shear strength of walls built in thin jointed masonry is superior compared to conventional cement mortar. The behavior of walls with flanges is ductile when compared to walls without flanges.

Green buildings model: Impact of rigid polyurethane foam on indoor environment and sustainable development in energy sector

The construction and building industry in the modern world heavily relies on advanced techniques and materials such as polymers. However, with the world's population alarmingly increasing, contributing to the greenhouse effect, and severe weather conditions amplifying, it has become crucial to reduce the heat effects in both new and old buildings. To achieve this, 50–70% more energy is necessary, which highlights the importance of energy-efficient construction practices and materials. Consequently, a comprehensive study was conducted to evaluate the efficacy of Polyurethane in indoor environments and energy conservation. Current study was performed due to an innovative application of insulation materials as to reduce the heat and energy costs in construction works. Thermal conductivity at mean temperature 35 °C was found 0.0272 (W/m K) with maximum in burnt clay brick (1.43 W/m K) by using hotplate apparatus. Specific heat was also found less 0.85 (KJ/Kg K) at density 32 kg/m3 while results were at par in reinforcement cement concrete and burnt clay brick 0.91, 0.91 (KJ/Kg K) respectively. Similarly, heat transmittance values of different roof sections by using polyurethane insulation showing satisfaction the ECBC in Buildings deviating standard U-value 1.20% to 0.418 (W/m2 K) with its excellent performance. Polyurethane treatments have been found to exert a significant impact on the computation of thermal resistance and overall heat transfer coefficients. In contrast, non-insulated treatments yielded inconclusive results with little to no significance. This highlights the importance of insulation materials in energy-efficient construction practices. Energy consumption in winter and summer also has shown the significant impact by using polyurethane application with cumulative saving of 60–62% electricity. Economic Benefit of polyurethane in RCC and Conventional buildings describes positive and highly significant impact in present study. Application of polyurethane in new and old buildings ultimate enhanced the better quality of life and living standards from people of applied countries and is strongly recommended for future prospects and endeavors as Eco-friendly and energy efficient for sustainable development.

Use of steel wire mesh for compressive strength enhancement of AAC masonry wall

Autoclaved aerated concrete (AAC) is an alternate building block but possess a low compressive strength in comparison to the traditional burnt clay bricks. Past earthquakes have shown that the seismic capability of the masonry walls, particularly using low-strength blocks are very weak, and thus strengthening of this masonry is necessitated. Wire mesh is one of the most common and cost-effective strengthening materials. Wrapping the entire surface of the wall with wire mesh is the most adopted technique. However, in large-scale construction, it is un-economical. Thus, the present study investigates the behaviour of AAC masonry wall by embedding the steel wire mesh at the bed joint and bed-head joint of the masonry course. Two types of wire mesh, i.e., (a) chicken wire mesh (CWM) and (b) welded wire mesh (WWM) were employed for the strengthening. Wire mesh was alternately installed at the bed joint of the course of the masonry and subsequently installed at the bed-head joint of the course with proper anchorage using a U nail. The results show that strengthened wall specimens improve the compressive load capacity, energy dissipating capacity, ductility, and stiffness, as well as significantly improving the abrupt failure of the wall specimens. Bed-head joint strengthened specimens outperform the bed joint strengthened specimens in terms of capacities.

Burnt-Bricks Production Using Extracted Finer Particles from Soil with Fly Ash Addition

Earthen building materials, including mud, adobe, rammed earth, and bricks, have a long history of use in civil engineering construction all throughout the world. Burnt bricks are one of these materials thatis important. However, the availabilityof raw materials for making bricks is limited. As a result, numerous alternatives have been investigated as raw materials for making bricks. These substitutes include fly ash, rice husk and ash, industrial, and agricultural waste. The current study suggests a novel method for producing burnt bricks using extracted finer and fly ash.Finer particle extraction was done through soil washing. Since the extracted finer is having high plasticity index and high linear shrinkage, extracted finer was mixed with 20%, 25%, 30%, 40% and 50% fly ash. Fly ash is an industrial waste; hence the use of fly ash for this kind of production would give a sustainable solution for waste management. Every finer-fly ash combination underwent an Atterburg test to evaluate its qualities, particularly its plasticity index and linear shrinkage. Standard-type mold (220 x 115 x 75 mm) was used to producethe handmade bricks. Compressive strength, flexural strength, water absorption, density, and dimension variations of burned bricks were all examined. Results were compared with SLS 39: Specification for burnt clay bricks. Further, these properties were compared with the same properties of bricks made with soil taken from the brick-making industry mixed with fly ash and industrial available burnt-bricks.Additionally, wire-cut bricks were produced using extractedfiner and 25% fly ash. The dimensional variationof finer-fly ash mixed burnt bricks is decreasing when the fly ash % is increased relative to the mold size. Compressive strength of the Grade 2 category was demonstrated using bricks manufactured with a 25% fly addition, according to SLS 39. According to the aforementioned findings, burnt bricks composed of extractedfiner and fly ash have higher desirable qualities when 25% more fly ash is added. Additionally, it shows that using fly ash results in lightweight bricks.The wire-cut bricks made with this selected mixture give 10.64 N/mm2 of compressive strength and it satisfies the SLS 39 requirements for wire-cut bricks. Also, its water absorption was nearly 16% which is below the SLS required value (18%).

Investigation of agro-forestry and construction demolition wastes in alkali-activated fly ash bricks as sustainable building materials

Production of burnt clay bricks, cement and burning of agricultural/forestry wastes are responsible for major greenhouse gases emission. The present work investigate the effect of treated rice straw and forestry leaves in alkali-activated fly ash bricks with construction & demolition wastes for non-load bearing partitions walls at elevated temperature of 800 °C. 1–4 wt% incorporated agro-forestry wastes fly ash bricks with 10 and 20 wt% ground granulated blast slag (GGBFS) addition shows compressive strength ranging from 8 to 15 MPa. The thermal conductivity of the panels with 1–4 wt% agro-forestry addition varies from 0.4 to 0.5 W/m.K. The sound transmission class (STC) of 20 mm thick agro-forestry waste fly ash samples depict moderate sound insulation properties over the range of 24 to 37 dB. The wallette units of burnt clay bricks and agro-forestry based fly ash bricks show load carrying capacity of 360 kN, 273 kN and 195 kN, 110 kN at temperatures of 35 °C and 800 °C respectively. The present study shows a potential green solution toward sustainable building materials in construction sector leading to reduced depletion of fertile soil used in production of burnt clay bricks.

Use of wood sawdust ash as effective raw material for clay bricks

The world is gradually looking for waste material properties and finding a way out of using it as secondary raw materials for other industrial purposes because of increasing environmental understanding and guidelines on controlling industrial waste. In the present world, the researcher’s primary aim is to enhance the usage of environmentally friendly materials and protect the environment. This research proves the possibility of using wood sawdust ash (WSDA) partially replace clay and sand manufacturing bricks. This paper used WSDA obtained from controlled combustion to replace other construction materials for bricks. The feasibility study used WSDA as an admixture with five distinct replacement levels, 5%, 10%, 15%, 20%, and 25%, for non-modular bricks (230×110×70) mm. The brick was evaluated for various strength parameters to authenticate clay bricks’ compressive strength, efflorescence, and water absorption properties. The findings revealed that the compressive strength of WSDA bricks (11.01 N/mm2) is higher than fly ash-cement-based and burnt clay bricks, which are 6.93 N/mm2 and 9.56 N/mm2. Also, the water absorption is (31%) lower than clay burnt bricks.

Evaluating the properties of compressed soil earth blocks after the addition of bagasse ash, marble powder and paddy straw

Constructing structures and their establishments with the help of non-toxic and ecological materials that reduce the environmental damages caused in the process and help protect nature can be termed sustainable construction. Red burnt clay bricks are being used for the construction which requires a lot of energy in the process. For the preparation of these bricks, cement is used as a stabilizer and we all are aware that the production of cement releases a lot of energy. Red burnt clay bricks are burnt in kilns which pollutes the environment. Many countries have started using compressed stabilized earth blocks (CSEBs) to overcome these situations. CSBEs are the blocks consisting of clay and one or more stabilizers which are compressed together with the help of a manual press or machines. This study used waste materials like rice straw, marble dust, and bagasse ash as stabilizers. Using waste materials in CSEBs can help us in sustainable development and also will help in reducing the cost of construction. In this study, rice straw is used in the percentages 0.75%, 0.90%, and 1.05%. Marble dust is used in the percentages of 8%, 10%, and 12%. And bagasse ash is used in the percentages of 27%, 32%, and 37%. A total of 27 combinations were selected with these percentages. And for each test, 2 blocks of size 220mm x 100mm x 100mm and beams of size 500mm x 100mm x 100mm were prepared. These blocks were cured by the sprinkling of water for 28 days. Various tests like OMC & MDD, and Flexural Strength were performed in this study.

Computational modelling in a high rise building with different building envelope materials for sustainable living

This research focuses on identifying a sustainable material for building envelope for energy efficacy in naturally ventilated high rise residential buildings through CFD. Convective heat transfer is observed in three levels of the 14 storied highrise naturally ventilated building using three different building envelope materials ? burnt clay bricks, solid concrete block, and hollow concrete block. To artificially create the environment with CFD the different temperatures and velocities are used. The boundary conditions - initial outdoor temperatures 30 ?C and 23 ?C, respectively, were kept constant and the initial outdoor velocities 1 m/s to 10 m/s, were varied and simulated at 12 noon condition. Simulation results reveal, higher indoor temperatures in the roof exposed floor. At 30?C it is observed that there is a 0.2-0.3?C temperature difference between the burnt clay brick wall and the hollow concrete block wall through the varied velocities. In all cases of air velocities, the air temperature in the indoor spaces of the solid concrete block wall was found to be highest. This proves that solid concrete block wall has the highest conductivity and least resistivity over the other two materials. In the hollow concrete block, the process of conduction is slow and apparently the temperature in the indoor spaces is reduced. Thus, the results clearly indicate that the temperature in the indoor spaces of the hollow block building envelope was comparatively low when compared to the other two building materials.

Mechanical performance of 100% recycled aggregate concrete (RAC) bricks

Urbanization and modern development of expanding infrastructure have resulted in large construction activities. With the expeditious growth in the construction industry, the rate of demolition has also increased. This is causing considerable increase in Construction and Demolition (C&D) waste all around the globe. To minimize its impact on society and environment, preventive measures are required to be taken on urgent basis, and for this reason construction industry has proposed the use of recycle concrete aggregates in different applications and there is dire need to investigate experimentally the properties of concrete products made using Recycled Aggregate Concrete (RAC). In this regard, this study focused to investigate the mechanical properties of 100% RAC bricks prepared with two different compositions with respect to coarse to fine aggregates ratio (i.e., 70:30 and 60:40), cement dosage (i.e., 10% and 15% by weight of total aggregates) and casting pressure (i.e., 25 MPa and 35 MPa). Recycled concrete aggregates required for this study were produced by crushing tested concrete samples having compressive strength of 21 MPa to 28 MPa. Mechanical tests were performed on bricks to determine their compressive strength, flexural strength, shear strength, impact energy in compression and flexure. In addition to these destructive tests, non-destructive (rebound hammer and ultra-sonic pulse velocity) tests were also performed. To draft a comparison, Natural Aggregate Concrete (NAC) bricks and first class burnt clay bricks were also tested. The results indicated that the compressive strength of NAC bricks was about 30% higher than the compressive strength of RAC bricks. However, RAC bricks exhibited higher compressive strength as compared to burnt-clay bricks. The flexural strength of RAC bricks containing 60% coarse aggregates and 40% fine aggregates and RAC bricks containing 70% coarse aggregates and 30% fine aggregates was found to be almost similar but their flexure strength was 37.3% and 20.7% lesser than their corresponding NAC bricks. Flexure strength of RAC bricks and burnt clay bricks was found to be almost same. Qualitative assessment by ultrasonic pulse velocity (UPV) tests showed that the NAC and RAC bricks were of good quality as per the standard criteria. The findings of this study indicated that RAC bricks satisfied the strength requirements as stated by local and international standards. Further, RAC bricks performed better than commonly used first class burnt clay bricks. Production and use of RAC bricks in masonry structures will not only help to conserve the depleting resources of natural aggregates and clay but also help to protect our environment from pollution by reducing CO2 emission caused by the coal-burning as fuel in kilns for the manufacturing of burnt-clay bricks.